According to the New York Post, Birrnbaum is "delighted" to have a "built-in party partner," but she never planned for her child to be born during Leap Year on Feb. 29; it happened to be the way it worked out.

Rose is reportedly one of 11,430 babies in the U.S. that made their debut to the world on 2008's Leap Day.

“It was just luck, all the stars lined up at the right time,” said Birnbaum. The Post reported Birnbaum is a lawyer for kids in child-welfare cases.

Birnbaum indicated she hopes she can use their shared birthday to teach her daughter Rose about the Earth's orbit around the sun.

“She’s really smart, so hopefully in the next two years or her next real birthday, she’ll be [learning the solar system],” Birnbaum said.

On average, one-in-1,461 birthdays have a chance of being born on February 29, however a mother and daughter both sharing the same Leap Day birthday is rare.

The Post reported "brushing aside huge variables such as seasonal birth rates, specific generational trends, and other man-made manipulations," James Ennis, a professor at Tufts University said the odds of a mother and child sharing Leap Day birthdays is 1 in 2.1 million.

In related news, a Pennsylvania family is celebrating three Leap Day birthdays today for 16-year-old twins Elizabeth and Dorothy Carter, along with their grandfather, Edward Austra, who turns 80.

Last night presidential candidate Ron Paul speaking at a Springfield, Va. event, wished his wife Carol, who has a Leap Day birthday, and presented her with roses; the audience at the gathering sang her a "Happy Birthday."

No news on how many, if any, Leap Day birthday celebrants are spending their time at Disney parks for its first ever opening for 24-hour straight special park hours today.